Question 883402: A car travelled 1.2 times faster than another car. The difference in their speeds was 24 km/h. Find the speed of each car Found 2 solutions by Alan3354, LinnW:Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! A car travelled 1.2 times faster than another car. The difference in their speeds was 24 km/h. Find the speed of each car
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f = fast car's speed
s = slow car's speed
1 times faster = 2 times as fast
1.2 times faster = 2.2 times as fast
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f = s + 24
f = 2.2s
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2.2s = s + 24
1.2s = 24
s = 20 km/hr
f = 44 km/hr
You can put this solution on YOUR website! set x = speed of slower car
do cross products
1.2x = 1(x+24)
1.2x = x + 24
add -x to each side
.2x = 24
divide each side by .2
x = 24/0.2 = 120
The faster car is going 120 + 24 = 144
